Spray Tip Update

Nozzle Technology

• Nozzles designed to reduce drift• Improved drop size control• Emphasis on ‘Spray Quality’

Nozzles are important because:

• Control the amount – GPA.• Determine uniformity of application.

• Affects the coverage.• Influences the drift potential.

Spray Characteristics are Important to Understand:

Demonstrates Turbo Flat vs TurboDrop-5 MPH Wind

110110oo 8080oo

Nozzles Types?

Extended Range Flat-fan:• Tapered edge pattern• 80 and 110 degree fan• Requires overlap - 50 to 60%• 15-60 psi range

110°

80°

Nozzles Types?

Turbo Flat-fan: Turbulence chamber Tapered edge, wide angle flat pattern Designed to work in flat-fan nozzle holder Uniform spray distribution, 50-60% overlap Wide pressure range, 15 – 90 psi Large, drift resistant droplets Plastic with superior wear characteristics

TT

XR

Nozzles Types?

Air-Induction/Venturi NozzlesAir is drawn into the nozzle cavity

Exits with the fluid.

Air/Induction – Venturi Nozzle:

Air intake venturi section

Spraying Systems AI TeeJet

Mixing Chamber - air and spray solution blended

Exit orifice

Better Penetration?Improved coverage?Reduced drift? YES!!!

Air/Induction – Venturi Nozzle:• Greenleaf –

TurboDrop• Air intake venturi

section• Mixing Chamber - air

and spray solution blended

• Pattern tip forms large air-bubble drops

XR Turbo Flat-fan compared to XR Turbo Flat-fan compared to A.I.A.I.

XR vs TurboDrop Turbo Flat vs TurboDrop

Driftable Droplets: Spraying Systems-2000

Nozzle Type(0.5 GPM Flow)

Approximate % of SprayVolume < 200 Microns

15 PSI 40 PSI

XR 11005 14% 22%

XR 8005 6% 12%

DG 11005 N/A 11%

DG 8005 N/A 7%

TT 11005 <1% <6%

TF-2.5 <1% <1%

AI 11005 N/A <1%

Final thoughts:• Due to weather, all nozzle produce small

droplets– high temperature, low humidity = high temperature, low humidity =

smaller dropssmaller drops– evaporationevaporation

• Match nozzle to pest – watch for drift• Venturi tips

– Good for systemic or contact herbicides.Good for systemic or contact herbicides.– Performance over a wide range of Performance over a wide range of

pressurespressures– Minimize spray drift potentialMinimize spray drift potential– Maximizing performance.Maximizing performance.